Table 3 Predictors of fertility by background characteristics in Nigeria
From: Ethnic disparities in fertility and its determinants in Nigeria
Background Variables | Hausa/F | Igbo | Yoruba | All | All | All |
|---|---|---|---|---|---|---|
Model 1 | Model 2 | Model 3 | ||||
aIRR(C.I) | aIRR(C.I) | aIRR(C.I) | aIRR(C.I) | aIRR(C.I) | aIRR(C.I) | |
Age | ||||||
15–24 | 0.212*** (0.196, 0.229) | 0.311*** (0.262, 0.370) | 0.333*** (0.279, 0.399) | 0.222*** (0.208, 0.236) | 0.234*** (0.219, 0.250) | |
25–34 | 0.515*** (0.480, 0.552) | 0.560*** (0.495, 0.633) | 0.610*** (0.539, 0.691) | 0.518*** (0.492, 0.546) | 0.536*** (0.508, 0.566) | |
35–44 | 0.846*** (0.786, 0.910) | 0.825** (0.732, 0.929) | 0.905 (0.799, 1.024) | 0.838*** (0.794, 0.885) | 0.846*** (0.801, 0.894) | |
45–49 | 1 | 1 | 1 | 1 | 1 | |
Ethnicity | ||||||
Hausa/F | 1.725*** (1.661, 1.792) | 1.398*** (1.334, 1.466) | 1.148* (1.021, 1.292) | |||
Igbo | 1.043 (0.997, 1.091) | 1.135*** (1.07, 1.199) | 1.031 (0.925, 1.148) | |||
Yoruba | 1 | 1 | 1 | |||
Residence | ||||||
Urban | 1.002 (0.932, 1.077) | 0.996 (0.911, 1.089) | 0.934 (0.833, 1.047) | 0.998 (0.952, 1.046) | ||
Education | ||||||
No education | 1.246* (1.007, 1.541) | 1.399** (1.144, 1.710) | 1.348** (1.109, 1.638) | 1.333*** (1.213, 1.465) | ||
Primary | 1.262* (1.015, 1.569) | 1.369*** (1.185, 1.583) | 1.396*** (1.220, 1.598) | 1.364*** (1.250, 1.487) | ||
Secondary | 1.160 (0.931, 1.444) | 1.110 (0.981, 1.255) | 1.252*** (1.113, 1.409) | 1.208*** (1.117, 1.307) | ||
Higher | 1 | 1 | 1 | 1 | ||
Religion | ||||||
Christian | 0.853 (0.447, 1.630) | 0.991 (0.729, 1.348) | 1.014 (0.612, 1.680) | 0.944 (0.746, 1.195) | ||
Islam | 0.961 (0.552, 1.671) | 0.824 (0.425, 1.597) | 1.032 (0.623, 1.710) | 0.990 (0.779, 1.259) | ||
Others | 1 | 1 | 1 | 1 | ||
Wealth Index | ||||||
Poor | 1.016 (0.927, 1.113) | 1.055 (0.926, 1.202) | 0.979 (0.785, 1.220) | 1.041 (0.978, 1.109) | ||
Middle | 0.983 (0.897, 1.078) | 1.007 (0.903, 1.123) | 1.082 (0.940, 1.245) | 1.027 (0.966, 1.092) | ||
Rich | 1 | 1 | 1 | 1 | ||
Sex preference | ||||||
No | 1.032 (0.982, 1.085) | 1.106 (1.018, 1.201)* | 1.091 (0.999, 1.191) | 1.057** (1.017, 1.098) | ||
Age at first birth | ||||||
< 18 | 1.386*** (1.326, 1.450) | 1.358*** (1.229, 1.501) | 1.268*** (1.135, 1.416) | 1.419*** (1.367, 1.473) | 1.367*** (1.316, 1.420) | |
18+ | 1 | 1 | 1 | 1 | 1 | |
Ever used any contraceptive | ||||||
No | 0.896 (0.801, 1.003) | 0.804*** (0.739, 0.874) | 0.873** (0.804, 0.947) | 0.855*** (0.812, 0.900) | ||
Fertility Preference | ||||||
< 5 | 0.869* (0.780, 0.967) | 0.749*** (0.678, 0.828) | 0.772*** (0.707, 0.842) | 0.807*** (0.765, 0.852) | ||
5+ | 1 | 1 | 1 | 1 | ||
Marital Status | ||||||
Never married | 1.150 (0.063, 16.095) | 0.538*** (0.426, 0.679) | 0.684* (0.490, 0.954) | 0.660*** (0.547, 0.795) | ||
Married | 1 | 1 | 1 | 1 | ||
LogLL | −26,782.020 | − 7943.533 | − 7838.901 | −54,442.465 | −42,934.796 | −42,598.395 |
AIC | 53,610.039 | 15,933.066 | 15,723.802 | 108,890.929 | 85,885.591 | 85,246.791 |
Deviance (v/df) | 0.105 | 0.092 | 0.074 | 1.074 | 0.108 | 0.098 |